Tuesday, 19 May 2020

Mapping Mountains – Significant Name Changes – 200m Twmpau


Cae Seri (ST 448 978)

There has been a Significant Name Change to a hill that is listed in the 200m Twmpau, with the summit height and its location confirmed by LIDAR analysis conducted by Myrddyn Phillips and the bwlch height, its location, the drop and status of the hill confirmed by detail on contemporary Ordnance Survey maps.

LIDAR image of Cae Seri (ST 448 978)

The criteria for the list that this name change applies to are:

200m Twmpau - Welsh hills at or above 200m and below 300m in height with 30m minimum drop, with an accompanying sub list entitled the 200m Sub-Twmpau with the criteria for this sub category being all Welsh hills at or above 200m and below 300m in height with 20m or more and below 30m of drop, with the word Twmpau being an acronym standing for thirty welsh metre prominences and upward.

The hill is adjoined to the Gwent Is Coed group of hills which are situated in the south-eastern part of South Wales (Region C, Sub-Region C3), and it is positioned with the B4235 road to its west and south, and the B4293 road to its east, and has the town of Cas-gwent (Chepstow) towards the south-east.

Extract from the Ordnance Survey 1:25,000 Explorer map

When the original 200m height band of Welsh P30 hills were published on Geoff Crowder’s v-g.me website this hill was listed under the name of Mynydd-bach, with an accompanying note stating; Name from buildings to the South-West.


Mynydd-bach261mST44997917114Name from buildings to the South-West


During my early hill listing I thought it appropriate to either invent a name for a hill, or use a name that appeared near to the summit of the hill on Ordnance Survey maps of the day.  My preference was to use farm names and put Pen, Bryn or Moel in front of them or as in this instance transpose the name of what is probably a farm and use it for that of the hill.  This is not a practice that I now advocate as with time and inclination place-name data can be improved either by asking local people or by examining historic documents, through this form of research an appropriate name for the hill can usually be found.

As the summit of this hill comprises bounded land the details for it were examined on the Tithe map.  The term Tithe map is generally given to a map of a Welsh or English parish or township and which was prepared after the 1836 Tithe Commutation Act.  This act allowed tithes to be paid in cash rather than goods.  The Tithe maps gave names of owners and occupiers of land in each parish and importantly for place-name research they also included the name of enclosed land.  This enclosed land is usually based on a field system, however not every field is given a name, but many are and especially so in Wales.

Extract from the Tithe map

The enclosed land where the summit of this hill is situated is given the number 253 on the Tithe map, this can be cross referenced against the apportionments; it is these apportionments that give the name of the owner or occupier of the land as well as the name of the land.  The land where the summit of this hill is situated is named as Cae Seri in the apportionments (written as Cae Serry and incorrectly transposed in the online Tithe details as Cae Jerry), with the details on the Tithe map appearing in the parish of Wolvesnewton and in the county named as Monmouth.

Extract from the apportionments

Therefore, the name this hill is now listed by in the 200m Twmpau is Cae Seri, and this name was derived from the Tithe map.


The full details for the hill are:

Group:  Gwent Is Coed

Name:  Cae Seri

Previously Listed Name:  Mynydd-bach 
  
OS 1:50,000 map:  171

Summit Height:  261.1m (LIDAR)

Summit Grid Reference:  ST 44881 97883 (LIDAR)

Bwlch Height:  c 228m (interpolation)

Bwlch Grid Reference:  ST 47587 98456 (interpolation)

Drop:  c 33m (LIDAR summit and interpolated bwlch)


Myrddyn Phillips (May 2020)



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